Using IBD Bonder is a vitally important step needed to insure correct and excellent Gel adhesion. This is a non-acid primer used on natural nails for all types of IBD UV Gel applications. As IBD Bonder is non-etching it is gentler on nails than traditional acrylic primers. Once applied sparingly, it needs to be cured under a UV light for one minute. Your Gel product is then applied directly on top.